MAX6439UTDHSD3-T

Overview

The MAX6439UTDHSD3-T is an ultra-low-power single battery monitor from the MAX6439 family, housed in a SOT-23-6 package. It operates within a supply voltage range of 1 V to 5.5 V and supports temperatures from -40°C to +85°C. This component features factory-trimmed thresholds with a low-battery high threshold of 2.925 V and a low threshold of 1.7 V. It integrates a microprocessor supervisor with an active-low reset output and manual reset capability.

Feature Summary

• Integrates a microprocessor supervisor with active-low reset output and manual push-button reset function
• Provides single low-battery output signaling for system operation states
• Requires no external components for basic operation
• Features hysteresis on low-battery outputs to prevent false triggering

Applications

• Single-cell lithium-ion battery monitoring
• Multicell alkaline battery systems
• NiCd/NiMH battery management
• Microprocessor system supervision

Procurement Notes

Verify the specific suffix DHHS against official Analog Devices documentation to confirm the exact threshold configuration. Confirm RoHS compliance status and lead times directly with authorized distributors as availability varies. Ensure the SOT-23-6 package matches your PCB footprint requirements before ordering.

Selection Notes

Select this part when a single low-battery warning is sufficient for system power management. The fixed 2.925 V/1.7 V thresholds suit specific lithium-ion or multi-cell applications. Consider the MAX6440 series if dual-level monitoring is required instead of single-level alerting.

Part Context

This device belongs to the MAX6439–MAX6442 family of low-power battery monitors. These ICs combine battery monitoring with microprocessor reset generation in a compact surface-mount package. The family offers various factory-trimmed threshold combinations to accommodate different battery chemistries without external resistors.

Replacement Considerations

The MAX6439UTLSVD3+T and MAX6439UTLQYD3+T are alternative parts within the same family offering different factory-trimmed threshold voltages. Verify that the specific threshold values of the replacement match the design requirements.